Bolt for Cassette - 8mm x 25mm
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DR Axle Comparison Chart |
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| DR Axle | Thickness | Hardness | CRG # |
| DR1 | 2.0mm | 60 | S 20 |
| DR2 | 2.5mm | 80 | S 25 |
| DR3 | 2.0mm | 90 | T 3 |
| DR4 | 2.5mm | 130 | T 4 |
| DR5 | 2.0mm | 160 | M 20 |
| DR6 | 2.0mm | 200 | T 2 |
| DR7 | 2.0mm | 230 | T 5 |
